K3Al2As3 — Properties & Data | MatWorld

K3Al2As3

metal

· JVASP-12902· K3Al2As3

K3Al2As3 is an intermetallic compound combining potassium, aluminum, and arsenic, belonging to the class of ternary metal systems with limited commercial development. This material exists primarily in the research domain as a potential semiconductor or functional material, with properties influenced by its mixed-metal composition and the arsenic-containing phase. Engineers would encounter this compound in specialized research contexts exploring novel intermetallic phases for thermoelectric applications, optoelectronics, or other advanced material systems where arsenic-containing ternary compounds offer unique electronic or phononic properties unavailable in binary or simpler systems.

research semiconductorsthermoelectric materialsintermetallic phase studiesadvanced materials developmentelectronic compound exploration

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	3,119.8	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)	1,721.6	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1065	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.371	eV	DFT · OptB88vdW
↳	2.218	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.029	-	DFT · OptB88vdW
↳	5.985	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.2033	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.723	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00209	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000965	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-179.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	254.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	18.27	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6626	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

K3Al2As3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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